﻿#region Copyright(c) Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
// -----------------------------------------------------------------------------
// Copyright(c) 2010 Alexey Sadomov, Vladimir Timashkov. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   1. No Trademark License - Microsoft Public License (Ms-PL) does not grant you rights to use
//      authors names, logos, or trademarks.
//   2. If you distribute any portion of the software, you must retain all copyright,
//      patent, trademark, and attribution notices that are present in the software.
//   3. If you distribute any portion of the software in source code form, you may do
//      so only under this license by including a complete copy of Microsoft Public License (Ms-PL)
//      with your distribution. If you distribute any portion of the software in compiled
//      or object code form, you may only do so under a license that complies with
//      Microsoft Public License (Ms-PL).
//   4. The names of the authors may not be used to endorse or promote products
//      derived from this software without specific prior written permission.
//
// The software is licensed "as-is." You bear the risk of using it. The authors
// give no express warranties, guarantees or conditions. You may have additional consumer
// rights under your local laws which this license cannot change. To the extent permitted
// under your local laws, the authors exclude the implied warranties of merchantability,
// fitness for a particular purpose and non-infringement.
// -----------------------------------------------------------------------------
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using T2V.SharePoint.Common.Utilities.Camlex.Interfaces;

namespace T2V.SharePoint.Common.Utilities.Camlex.Impl
{
    // Base class for all analyzers
    internal abstract class BaseAnalyzer : IAnalyzer
    {
        protected IOperationResultBuilder operationResultBuilder;

        protected BaseAnalyzer(IOperationResultBuilder operationResultBuilder)
        {
            this.operationResultBuilder = operationResultBuilder;
        }

        public abstract bool IsValid(LambdaExpression expr);
        public abstract IOperation GetOperation(LambdaExpression expr);

        protected bool isValidEvaluableExpression(Expression expr)
        {
//            if (expr is ConstantExpression)
//            {
//                return true;
//            }
//            if (expr is MemberExpression/* && ((MemberExpression)rightExpression).Expression is ConstantExpression*/)
//            {
//                return true;
//            }
//            if (expr is MethodCallExpression/* && ((MethodCallExpression)rightExpression).Object is ConstantExpression*/)
//            {
//                return true;
//            }
//            if (expr is InvocationExpression)
//            {
//                return true;
//            }
//            if (expr is NewExpression)
//            {
//                return true;
//            }
//            if (expr is ConditionalExpression)
//            {
//                return true;
//            }
//            return false;
            return (!expr.Type.IsSubclassOf(typeof(BaseFieldType)));
        }
    }
}
